Pile-wire-positioning hook



Aug. 27, 1929. V w, STQNE I 1,726,506

FILE WIRE POSITIONING HOOK Fileci June 26, 1928 2 Sheets-Sheet 1 Aug.27,1929. E. w. STONE 1,726,506

PILE WIRE POSITIONING HOOK Filed June 26, 1928 2 Sheets-She 2 A-T-ToR/vf Y Patented Aug. 27, 1929. f I

PATENT OFFICE.

UNITED STATES EDWIN W. STONE, OF LONGMEADOW, MASSACHUSETTS, ASSIGNOR TO BIGELOW-HART- FORD CARPET COMPANY, OF THOMPSONYILLE, CONNECTICUTQA CORPORATION OF MASSACHUSETTS.

Application ,filed June 26,

This invention relates to pile fabric looms and is more especially directed to pile wire positioning hooks which serve to retain the pile wires properly positioned during the pile formation.

In weaving pile fabrics such as pile carpets and pile rugs it is now the practice to provide pile wires in the form of thin blades which are inserted in the shed and over which certain of the pile forming warp threads are passed during the weaving operation. It is essential that the pile forming wires shall extend directly transversely of the fabric and shall retain their upright pile forming position, but the strain upon the pile wires when the pile warp threads are passed about them is liable to cause the pile wires either to be turned downward from their proper upright position under the strain of the pile forming warp, or, in some cases, to be deflected rearwardly near their central portions by the pull of the pile forming warp. These objectionable conditions are sometimes overeomebythe use of pile wire retainers or hookswhich are so located that the shoulder of the hook portion of the retainer or hook willengage over the pile wire as it is moved to the fell ofthe cloth and hold it from deflection. y

In weaving wide pile fabrics, the support for the pile wire retainers or hooks is liable to bedefiected, especially in the backward direction, under the pull of the hooks engaged with the successivepile wires. This is owing to the excessive strain that is placed upon the pile wires by the pile formin warps, which becomes especially manifesto in certain figured pile fabrics, and one of the objects of the present invention is to provide means for compensating for any backward bend or deflection of the pile wire hook support and to accurately position the hook for proper engagement with the pile wire last inserted and hold it in transverse relation to the warp threads.

The pile wire retainers or hooks shouldextend in parallelism with the warp threads and be held from lateral or deflecting movement, which would be liabletoform a mark in the completed fabric, and another feature of the present invention therefore consists in so mounting the pile wire retainers or hooks that they shall-maintain their proper backwardly extending position and be prevented from lateral movement, so that any PTLE-WIRE-IPOSITIONING HOOK.

1928. Serial No. 288,343.

occur are prevented.

. During the continued use of the pile wire retainers or hooks, the, shouldered or hooked portion of the retainer is liable to become worn in part and the present invention provides means whereby such hooked or shouldered portion may be ground or filed into proper shape and then brought to its proper pile wire retaining position by means between the pile wire hook and its support.

' The invention and new features thereof and novel combination of parts will be better understood from the following description and the accompanying drawings of one good formthereof. i

In the drawings:

' Fig. 1 is a perspective View of certain portions of a loom at the front thereof, parts being broken away, and containing the present invention; 1 y

Fig. 2 is a sectional perspective of an eccentric or bushing that may be utilized in positioning the pile wire hook with which it is associated; l i

Fig. 3 is a fore-and-aft section of the front portion of a loom' containing the present invention, only so much of the loom itself being illustrated as to make clear the relation of the present invention therewith;

Fig. 4 is an enlarged section through the pile wire hook support, some of the parts being broken away; and l Fig. 5 is an underside view of the pile wire hook, showing more particularly the guiding means for retaining the hook in its proper backwardly extending position.

In the present instance, the invention is shown as employed in connection with a pile fabric loom for weaving carpets, rugs and the like, in which the pile loops are cut, but it is to be understood that the invention is not restricted in this respect and that featuresthereof are equally applicable and advantageous in weaving any of the usual pile fabrics. Also, the loom in the present instance is shown as the wide type for the production of pile carpetsandrugs of unusual width, butagain it is to be understood that the present invention is not limited thereto although its advantages are well manifested when employed as described.

The loom frame 1 may be of any usual construction adapted for the weaving of wide fabrics, and at the front thereof there is a spike or sand roll 2 which extends transversely of the loom and over which the pile fabric a passes as it is progressively woven.

The lay 3 may be of usual construction and, as shown, is carried by the lay swords ,4, as usual. Mounted upon the lay is the reed 5 which extends between the base of the reed and the cap or hand rail 6, the reed being formed as usual with dents in separated relation for the passage of the warp threads 6.

Rising from the front portionof the loom at each side thereof are the stands 7 which may be secured to the loom in any appropriate manner, as .by the bolts 8, and such stands form the bearings for the transversely extendingpile wire hook support 9. 1

The pile'wire hook support 9, as indicated in Figs. 1, 3 and 4, is preferably of circular cross-section and may be variously con trived, but, as illustrated, it is shown as of tubular form, which imparts the necessary strength to the pile wire hook support without undue weight. In certain aspects of the invention, the pile'wire hook support 9 may be differently contrived, but the circular cross-sectional construction is preferred.

In wide looms for weaving pile fabrics it is desirable to provide a number of pilewire hooks or retainers distributed at intervals transversely of the loom, but as such pile wire hooks or retainers may all be'of the same character or construction, a description of one will be suflicient for all. As shown in the illustration of Fig. 1, four pile wire hooksor retainers are employed, but of course the number may be varied to suit the conditions of use.

Mounted upon the pile wire hook support 1 9 are a seriesof eccentrics 10 each of which may have a saw-cut 11 and be provided on its outer edge with a flange 12, the con struction being such thatthe eccentric itself may be turnedto different positions on the pile wire. hook support 9 and may also be moved transversely of the loom to different transverse positions thereon.

Each of the eccentrics 10, of which there may be any number, has mounted thereon the clamping member which affords a sup port for the pile wire hook. In the present instance of the 'linvention the clamping member comprises the two parts 13' and 14 which may be clamped upon the associated eccentric 10 by means of the bolts 15 which extend through and are threaded in cars 16 extending from the clamp members, the construction being such that when the members 13 and 14 are clamped I upon the eccentriclO,

the latter is held from both rotative and lateral movement relative to the pile wire hook support 9'; but should the clamp members 13 and '14 be loosened by manipulation of the b0lts 15, the eccentric may be moved longitudinally of the pile wire hook support 9 and may be rotated relatively thereto for a purpose that will more fully appear. The champing members and eccentric constitute one good form of. pile wire hook mounting bet-ween the support 9 and pile wire hook.

Extending backwardly from the clamp member 14L is the arm 17 having its rear end portion bifurcated, as at 18, and pivotally connected to the arm 17 at 19 in the bifurcated portion 18 is the pile wire positioning hook or retainer 20. The pile wire hook or retainer extends rearwardly from its pivotal mounting 19 and its rear end portion 21 passesbetween the adjoining dents of the reed 5. The pilewire positioning hook has a shoulder or hook portion 22, the purpose of which is to engage back of the last inserted pile wire 23 when it is placed in the pile forming shed.

Frontward of the pivotal connection 19 between the pilewire hook and the arm 17, the pile wire hook is extended to provide an arm 24: which has a portion 25 in the bifurcation 18 of the arm 17, with the result that any tendency to lateral movement of the. pile wire hook is restrained.

It is desirable that the shoulder or hook portion 22 ofthe pilewire hook shall engage the upper rear portion of each successive pile wire as it'is inserted in the formation of the pile loops, and, in order that the proper vertical relation between the shoulder 22 and the, pile wire may be secured, means are. provided between the clamp or arm 17 thereof and the forwardly extending portion 24 of the pile wire hook to vary the vertical position of the hook or shoulder 22;

In the present instance of the invention, the forwardly extending arm 24; of the pile wire hook is provided with a recess 26 which may be appropriately formed as of conical shape for engagement by the lower conical end of the adjusting screw 27 held locked in its adjusted'position by the nut 28, the result being that while the pile wire hook may be adjusted in a vertical plane about its pivotal support 19 and be retained from lateral displacement by the bifurcation 18 engaged with the projection 25 of the hook, the lower conical end of the adjusting screw 27 also contributes to the maintenance of the pile wire in its backwardly extending position without lateral displacement.

. Since the pile wirehook is pivotally con-' nected to its support it readily permits the last inserted pile wire to be moved frontwardly into position frontward of the shoulder or book 22 by slight upward movement of the pile wire hook, and to return the hook to proper engagement with the pile wire the present invention contemplates the provision of yielding means acting in a vertical direction upon the pile wire hook.

In the present instance of the invention, such means comprises a resilient or spring arm 29, one end of whichmay be secured by the screws to the'arm 17, and have its backwardly extending portion resting on the s top of the pile wire hook, as indicated more clearly in Figs. 1, 3 and 4.

The rear end portion of the spring arm 29 is provided with the side embracing members 31 which include between them the rearwardly extending portion of the pile wire hook, the construction being such that the embracing members 81 or lugs serve not only to maintain the spring arm 29 in proper relation with. the hook but contribute further to the prevention of lateral displacement of the hook itself, thereby cooperating with the bifur-cation 18 and adjusting screw 27 to maintain the pile wire hook in its rearwardly extending position without lateral displacement, which would beliable to mark the cloth should such displacement take place.

Since. the rearwardly extending portion 21 of the pile wire hook passes betweenthe dents of the reed, and since the lay swings about the pivotal. support near the lower por tion of the loom, it is desirable to provide the rearwardly extending portion 21 of the hook with a recess32 to permit the cap 6 to take its circular course about the pivotal mounting of the lay withoutstriking the rear portion of the pile wire hook, a condition indicated by full and dotted lines in e v i i As hereinbefore stated, the rearward pull upon the pile wire'hook support ,9 has a tendency to deflect the supportrearwardly and this is especially manifested in a wide loom such as herein shown and described. The present invention, however, affords a ready means for meeting this condition by mounting the pilewire hooks upon the pile wire hook support 9 for adjustment frontwardly and rearwardly, as, for instance, by the eccentrics 10. To readily accomplish the adjustment where the eccentrics are employed and to compensate for any rearward deflection of the pile wire hook sup ort 9, it is only necessary to manipulate t e clamping bolts 15, loosen the clamp members upon the eccentric, turn the eccentric to its proper or desired positionand then set up the clamp members as before.

The shoulder 22 or hook which engages the pile wire may become worn and require grinding or filing, which of course places its active hooked surface further back, but by the present invention and the adjustment afforded by the eccentrics, such grinding or filing of the hook or shoulder may be effected and then compensation made therefor by a slight turning movement of the eccentric associated with the hook, in a manner hereinbefore stated.

Similarly, it may be desirable at times to change the lateral position of one or more pile wire hooks, and in accordance with the present invention this may be eifected by manipulation of the bolts 15 of the clamp members to loosen the eccentric and thereby permit it to be. moved laterally of the pile wire hook support 9 or transversely of the loom, and when the clamps are set up by the bolts 15 the yielding character of the eccentrio 10 furnished by the saw-cutll therein, firmly and effectively secures the pile wire hook in its'desired position.

The guidance of the pile wire hook or hooks to maintain them intheir desired rearwardly extending position and from lateral displacement calculated to mark the cloth,

may be variously contrived from the particular means herein shown and described but the mounting of the pile wire hook, the bifurcation 18 and projection 25, the adjust ing bolt 27 and the side embracing portions 31 of the spring 29,all contribute to insure the desired unchanging position of the pile wire hook, and while some of these features may not be necessary in all cases, the present invention nevertheless provides means for maintaining the pile wire hooks in their proper rearwardly extending position without liability oflateral displacement which might injuriously afi'ect the cloth.

Whatis claimed is: I

1. In a pile fabric loom:the combination, of a pile wire hook support extending transversely of the loom, a pile wire hook carried by said support and constructed to engage the last inserted .pile wire to retain it in position during the pile loop formation, and an eccentric mounted for rotative adjustment between the support and the pile wire hook that the hook maybe positioned for engagement'with the pile wires. M

2. In a pile fabric loom the combination of a pile wire hook support of circular crosssection extending transversely of the loom,

\a pile wire hook carried by said support and constructed to engage the last inserted pile wire to retain it in position during the pile loop formation, and an eccentric mounted for rotative adjustment between the support and the pile wire hook that the hook may be positioned for engagement with the pile wires.

3. In a pile fabric loom, the combination of apile wire hook, a pile wire hook sup port, a pile wire hook mounting between the support and pile wire hook including an eccentric rotatable relative to the pile wire hook to properly position the latter for engagement with the pile wires.

4. In a pile fabric loom, the combination of a hook support of circular cross-section, an eccentric mounted on the support, the eccentric and support being relatively rotatable, and a pile wire hook mounted on the eccentric.

5. In a pile fabric loom, the combination of a hook support of circular cross-section extending transversely of the loom, an eccentric mounted forrotative movement on the hook support, a clamp member mounted on the eccentric, and a pile wire hook carried by the clamp member and adapted to be 6. In a pile fabric loom,.the combination of a support extending transversely of the loom, a clamp member secured to said support, a split eccentric between the support and clamp member that the latter may secure the eccentric in adjusted position and a pile wire hook pivotally connected to the clamp member and extending rearwardly therefrom.

7 In a pile fabric loom, the combination of a transversely extending tubular support at the front of the loom, a clamp member embracing said tubular support and having a rearwardly extending arm, means for clamping the clamping member about said tubular support in different positions thereon, a. pile wire hook pivotally connected with the'arm, and a pile wire hook guide. engaging the pile wire hook for maintaining the hook in the same vertical plane between adjacent'warp threads at the fell of the cloth.

8. In a pile fabric loom, the combination of a tubular support extending transversely of the loom, a clamp member carried by the support and provided with a rearwardly ex tending arm, means interposed between the tubular support and clamp'member for, adjusting the clamp member towards and from the front of the loom on the tubular support and a pile wire hook pivotally mounted on said arm.

'9. In a pile fabric, loom, the combination of a support extending transversely of the 100m, a pile wire hook mounted on the support for adjustment to difierent positions transversely of the loom, an eccentric for moving the hook to different positions to and from the front'of the loom that it may engage the last inserted pile wire, and guiding devices for maintaining the hook in a fixed vertical plane that the hook may not mark the fabric being woven.

10. In a pile fabric loom,the combination of a transversely extending support, a member mounted thereon and having a rearwardly extending arm provided with a pile wire hook guiding portion, a pile wire hook pivotally connected to the rearwardly extending arm and having a; part cooperating with the guiding portion of the armto maintain the book from lateral displacement, and a second guide engaging the hook back of its pivotal connection with the rearwardly extending arm. I

11. In a pile fabric loom, the combination of a transversely extending support, a member mounted thereon and having, a rearwardly extending arm provided with a pile wire hook guiding portion, a pile wire hook pivotally connected to the rearwardly extend ing arm and having a part cooperating with the guiding portion of the arm to maintain the hook from lateral displacement, and a second guide constituted as a resilient member engaging the hook and normally acting to yieldinglyhold the hook in position to cooperate with the pile wires.

In testimony whereof, I

nameto this specification.

EDWIN w. STONE.

have signed my 

